Prompt Engineering Context Continuity

Preserve Context Across Chunks — the Continuity Contract

Chunks without continuity rules are read as separate documents. The continuity contract — numbering, wait rules, acknowledgements, completion — keeps N parts one document.

Overview

The silent failure of multi-part delivery is disconnection: the model treats each paste as a fresh document, summarizes part two as if part one never existed, and answers before part three arrives. The continuity contract is the fix, and this resource is its anatomy: every chunk numbered "i of N" with the rule that parts form ONE continuous document; wait instructions that forbid early responses; per-chunk acknowledgements ("Received chunk i of N") that catch lost parts; an explicit completion announcement; and continuation notes when a code block crosses a boundary. This setup loads a transcript in AI Reading Mode — the contract at full strictness.

How to use this resource

  1. Number everything

    "Chunk i of N" on every part — the model always knows where it is and what remains.

  2. Handshake every part

    The acknowledgement reply confirms receipt; a missing handshake reveals a lost chunk immediately.

  3. Announce completion explicitly

    The final chunk declares delivery done — the only signal that legitimately starts the response.

Why This Works

  • Explicit numbering replaces the model's guess about document boundaries
  • Handshakes convert silent loss into visible absence
  • A single completion signal ends the answered-too-early failure class

Best for

  • Anyone whose chunked content gets treated as separate documents
  • High-stakes deliveries where a lost part is expensive
  • Learning the delivery contract, not just using it

Not for

  • Carrying context to a NEW conversation — continuity here is within one conversation; across sessions is the Context Handoff Builder
  • Single-message content — the contract only earns its overhead across parts

Use cases

  • Stopping per-chunk answers and summaries
  • Catching a lost chunk before it corrupts the result
  • Understanding what each continuity marker does

FAQ

How does the chunked context package stop the model from summarizing part two before part one arrives?

The wait rule inside each header does it: "Do NOT respond, summarize, or analyze yet" plus "Wait until the final part explicitly announces that all chunks are delivered." No response is legitimate until the "===== ALL 2 CHUNKS DELIVERED =====" marker fires and states "the waiting rule ends now." That single completion signal, not any individual paste, is what releases analysis.

How do I tell if a chunk got lost mid-delivery using this contract?

Watch for the acknowledgement handshake. Each header instructs the model to reply ONLY "Received chunk 1 of 2." before you send the next part. A missing or wrong-numbered handshake turns a silent loss into a visible one immediately, so you resend that specific chunk instead of discovering the gap after it corrupts the final answer.

Are the character and token numbers in the chunk strategy exact for billing?

They are estimates, not billing figures. The NOTE spells it out: "Chunk budgets use character-based token estimates, not tokenizer output." The "~4,000 tokens (14,400 characters max per chunk) → 2 chunks" budget the long-prompt-splitter uses is a browser-side approximation to decide split points; your provider's real tokenizer and pricing will differ, so treat the counts as sizing guidance only.

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